npolibvlc.cpp

uclinux 下的vlc播放器源代码

    {
        VlcPlugin* p_plugin = reinterpret_cast<VlcPlugin*>(_instance->pdata);
        libvlc_exception_t ex;
        libvlc_exception_init(&ex);

        switch( index )
        {
            case ID_playlistitems_count:
            {
                int val = libvlc_playlist_items_count(p_plugin->getVLC(), &ex);
                if( libvlc_exception_raised(&ex) )
                {
                    NPN_SetException(this, libvlc_exception_get_message(&ex));
                    libvlc_exception_clear(&ex);
                    return INVOKERESULT_GENERIC_ERROR;
                }
                INT32_TO_NPVARIANT(val, result);
                return INVOKERESULT_NO_ERROR;
            }
            default:
                ;
        }
    }
    return INVOKERESULT_GENERIC_ERROR;
}

const NPUTF8 * const LibvlcPlaylistItemsNPObject::methodNames[] =
{
    "clear",
    "remove",
};

const int LibvlcPlaylistItemsNPObject::methodCount = sizeof(LibvlcPlaylistItemsNPObject::methodNames)/sizeof(NPUTF8 *);

enum LibvlcPlaylistItemsNPObjectMethodIds
{
    ID_playlistitems_clear,
    ID_playlistitems_remove,
};

RuntimeNPObject::InvokeResult LibvlcPlaylistItemsNPObject::invoke(int index, const NPVariant *args, uint32_t argCount, NPVariant &result)
{
    /* is plugin still running */
    if( _instance->pdata )
    {
        VlcPlugin* p_plugin = reinterpret_cast<VlcPlugin*>(_instance->pdata);
        libvlc_exception_t ex;
        libvlc_exception_init(&ex);

        switch( index )
        {
            case ID_playlistitems_clear:
                if( argCount == 0 )
                {
                    libvlc_playlist_clear(p_plugin->getVLC(), &ex);
                    if( libvlc_exception_raised(&ex) )
                    {
                        NPN_SetException(this, libvlc_exception_get_message(&ex));
                        libvlc_exception_clear(&ex);
                        return INVOKERESULT_GENERIC_ERROR;
                    }
                    else
                    {
                        VOID_TO_NPVARIANT(result);
                        return INVOKERESULT_NO_ERROR;
                    }
                }
                return INVOKERESULT_NO_SUCH_METHOD;
            case ID_playlistitems_remove:
                if( (argCount == 1) && isNumberValue(args[0]) )
                {
                    libvlc_playlist_delete_item(p_plugin->getVLC(), numberValue(args[0]), &ex);
                    if( libvlc_exception_raised(&ex) )
                    {
                        NPN_SetException(this, libvlc_exception_get_message(&ex));
                        libvlc_exception_clear(&ex);
                        return INVOKERESULT_GENERIC_ERROR;
                    }
                    else
                    {
                        VOID_TO_NPVARIANT(result);
                        return INVOKERESULT_NO_ERROR;
                    }
                }
                return INVOKERESULT_NO_SUCH_METHOD;
            default:
                ;
        }
    }
    return INVOKERESULT_GENERIC_ERROR;
}

/*
** implementation of libvlc playlist object
*/


LibvlcPlaylistNPObject::~LibvlcPlaylistNPObject()
{
    if( isValid() )
    {
        if( playlistItemsObj ) NPN_ReleaseObject(playlistItemsObj);
    }
};

const NPUTF8 * const LibvlcPlaylistNPObject::propertyNames[] = 
{
    "itemCount", /* deprecated */
    "isPlaying",
    "items",
};

const int LibvlcPlaylistNPObject::propertyCount = sizeof(LibvlcPlaylistNPObject::propertyNames)/sizeof(NPUTF8 *);

enum LibvlcPlaylistNPObjectPropertyIds
{
    ID_playlist_itemcount,
    ID_playlist_isplaying,
    ID_playlist_items,
};

RuntimeNPObject::InvokeResult LibvlcPlaylistNPObject::getProperty(int index, NPVariant &result)
{
    /* is plugin still running */
    if( _instance->pdata )
    {
        VlcPlugin* p_plugin = reinterpret_cast<VlcPlugin*>(_instance->pdata);
        libvlc_exception_t ex;
        libvlc_exception_init(&ex);

        switch( index )
        {
            case ID_playlist_itemcount: /* deprecated */
            {
                int val = libvlc_playlist_items_count(p_plugin->getVLC(), &ex);
                if( libvlc_exception_raised(&ex) )
                {
                    NPN_SetException(this, libvlc_exception_get_message(&ex));
                    libvlc_exception_clear(&ex);
                    return INVOKERESULT_GENERIC_ERROR;
                }
                INT32_TO_NPVARIANT(val, result);
                return INVOKERESULT_NO_ERROR;
            }
            case ID_playlist_isplaying:
            {
                int val = libvlc_playlist_isplaying(p_plugin->getVLC(), &ex);
                if( libvlc_exception_raised(&ex) )
                {
                    NPN_SetException(this, libvlc_exception_get_message(&ex));
                    libvlc_exception_clear(&ex);
                    return INVOKERESULT_GENERIC_ERROR;
                }
                BOOLEAN_TO_NPVARIANT(val, result);
                return INVOKERESULT_NO_ERROR;
            }
            case ID_playlist_items:
            {
                // create child object in lazyman fashion to avoid ownership problem with firefox
                if( ! playlistItemsObj )
                    playlistItemsObj = NPN_CreateObject(_instance, RuntimeNPClass<LibvlcPlaylistItemsNPObject>::getClass());
                OBJECT_TO_NPVARIANT(NPN_RetainObject(playlistItemsObj), result);
                return INVOKERESULT_NO_ERROR;
            }
            default:
                ;
        }
    }
    return INVOKERESULT_GENERIC_ERROR;
}

const NPUTF8 * const LibvlcPlaylistNPObject::methodNames[] =
{
    "add",
    "play",
    "playItem",
    "togglePause",
    "stop",
    "next",
    "prev",
    "clear", /* deprecated */
    "removeItem", /* deprecated */
};

const int LibvlcPlaylistNPObject::methodCount = sizeof(LibvlcPlaylistNPObject::methodNames)/sizeof(NPUTF8 *);

enum LibvlcPlaylistNPObjectMethodIds
{
    ID_playlist_add,
    ID_playlist_play,
    ID_playlist_playItem,
    ID_playlist_togglepause,
    ID_playlist_stop,
    ID_playlist_next,
    ID_playlist_prev,
    ID_playlist_clear,
    ID_playlist_removeitem
};

RuntimeNPObject::InvokeResult LibvlcPlaylistNPObject::invoke(int index, const NPVariant *args, uint32_t argCount, NPVariant &result)
{
    /* is plugin still running */
    if( _instance->pdata )
    {
        VlcPlugin* p_plugin = reinterpret_cast<VlcPlugin*>(_instance->pdata);
        libvlc_exception_t ex;
        libvlc_exception_init(&ex);

        switch( index )
        {
            case ID_playlist_add:
            {
                if( (argCount < 1) || (argCount > 3) )
                    return INVOKERESULT_NO_SUCH_METHOD;

                char *url = NULL;

                // grab URL
                if( NPVARIANT_IS_STRING(args[0]) )
                {
                    char *s = stringValue(NPVARIANT_TO_STRING(args[0]));
                    if( s )
                    {
                        url = p_plugin->getAbsoluteURL(s);
                        if( url )
                            delete s;
                        else
                            // problem with combining url, use argument
                            url = s;
                    }
                    else
                        return INVOKERESULT_OUT_OF_MEMORY;
                }
                else
                    return INVOKERESULT_NO_SUCH_METHOD;

                char *name = NULL;

                // grab name if available
                if( argCount > 1 )
                {
                    if( NPVARIANT_IS_NULL(args[1]) )
                    {
                        // do nothing
                    }
                    else if( NPVARIANT_IS_STRING(args[1]) )
                    {
                        name = stringValue(NPVARIANT_TO_STRING(args[0]));
                    }
                    else
                    {
                        delete url;
                        return INVOKERESULT_INVALID_VALUE;
                    }
                }

                int i_options = 0;
                char** ppsz_options = NULL;

                // grab options if available
                if( argCount > 2 )
                {
                    if( NPVARIANT_IS_NULL(args[2]) )
                    {
                        // do nothing
                    }
                    else if( NPVARIANT_IS_STRING(args[2]) )
                    {
                        parseOptions(NPVARIANT_TO_STRING(args[2]), &i_options, &ppsz_options);

                    }
                    else if( NPVARIANT_IS_OBJECT(args[2]) )
                    {
                        parseOptions(NPVARIANT_TO_OBJECT(args[2]), &i_options, &ppsz_options);
                    }
                    else
                    {
                        delete url;
                        delete name;
                        return INVOKERESULT_INVALID_VALUE;
                    }
                }

                int item = libvlc_playlist_add_extended(p_plugin->getVLC(),
                                                        url,
                                                        name,
                                                        i_options,
                                                        const_cast<const char **>(ppsz_options),
                                                        &ex);
                delete url;
                delete name;
                for( int i=0; i< i_options; ++i )
                {
                    delete ppsz_options[i];
                }
                delete ppsz_options;

                if( libvlc_exception_raised(&ex) )
                {
                    NPN_SetException(this, libvlc_exception_get_message(&ex));
                    libvlc_exception_clear(&ex);
                    return INVOKERESULT_GENERIC_ERROR;
                }
                else
                {
                    INT32_TO_NPVARIANT(item, result);
                    return INVOKERESULT_NO_ERROR;
                }
            }
            case ID_playlist_play:
                if( argCount == 0 )
                {
                    libvlc_playlist_play(p_plugin->getVLC(), -1, 0, NULL, &ex);
                    if( libvlc_exception_raised(&ex) )
                    {
                        NPN_SetException(this, libvlc_exception_get_message(&ex));
                        libvlc_exception_clear(&ex);
                        return INVOKERESULT_GENERIC_ERROR;
                    }
                    else
                    {
                        VOID_TO_NPVARIANT(result);
                        return INVOKERESULT_NO_ERROR;
                    }
                }
                return INVOKERESULT_NO_SUCH_METHOD;
            case ID_playlist_playItem:
                if( (argCount == 1) && isNumberValue(args[0]) )
                {
                    libvlc_playlist_play(p_plugin->getVLC(), numberValue(args[0]), 0, NULL, &ex);
                    if( libvlc_exception_raised(&ex) )
                    {
                        NPN_SetException(this, libvlc_exception_get_message(&ex));
                        libvlc_exception_clear(&ex);
                        return INVOKERESULT_GENERIC_ERROR;
                    }
                    else
                    {
                        VOID_TO_NPVARIANT(result);
                        return INVOKERESULT_NO_ERROR;
                    }
                }
                return INVOKERESULT_NO_SUCH_METHOD;
            case ID_playlist_togglepause:
                if( argCount == 0 )
                {
                    libvlc_playlist_pause(p_plugin->getVLC(), &ex);
                    if( libvlc_exception_raised(&ex) )
                    {
                        NPN_SetException(this, libvlc_exception_get_message(&ex));
                        libvlc_exception_clear(&ex);
                        return INVOKERESULT_GENERIC_ERROR;
                    }
                    else
                    {
                        VOID_TO_NPVARIANT(result);
                        return INVOKERESULT_NO_ERROR;
                    }
                }
                return INVOKERESULT_NO_SUCH_METHOD;
            case ID_playlist_stop:
                if( argCount == 0 )
                {
                    libvlc_playlist_stop(p_plugin->getVLC(), &ex);
                    if( libvlc_exception_raised(&ex) )
                    {
                        NPN_SetException(this, libvlc_exception_get_message(&ex));
                        libvlc_exception_clear(&ex);
                        return INVOKERESULT_GENERIC_ERROR;
                    }
                    else
                    {
                        VOID_TO_NPVARIANT(result);
                        return INVOKERESULT_NO_ERROR;
                    }
                }